1. The high efficiency of electricity core without air gap,
overstow coefficient can be as high as 95% above.2. No air gap can reduce vibration noise is small core core induced
vibration noise, winding uniform tight

3. Cover the annular core, effectively reduce the magnetostrictive
caused by "buzzing" sound.4. Operation because of low temperature iron losses can be 1.1
W/kg, the iron loss is very small, core temperature is low, around
the group in the core of low temperature heat in good condition, so
the transformer temperature rise is low.5. Easy to install, ring transformer only center a install screw,
especially in electronic equipment for rapid installation and
dismantling.